Question and response
Question
dig x.paubox.com. TXT
Answer
x.paubox.com. 300 TXT "v=spf1 ip4:52.26.218.15 ip4:52.26.86.178 ip4:52.39.9.202 ip4:54.69.172.93 ip4:54.69.65.158 ip4:34.218.219.9 ip4:52.13.16.134 ip4:35.155.205.36 ip4:34.211.93.3 ip4:54.187.208.83 ip4:34.210.225.178 ip4:52.43.232.107 ip4:44.234" ".7.164 ip4:54.190.223.39 ip4:52.38.140.162 ip4:50.112.141.209 ip4:35.163.187.232 ip4:54.69.12.59 ip4:34.217.222.199 ip4:52.12.219.5 ip4:52.41.48.65 ip4:52.40.133.144 ip4:54.189.251.240 ip4:165.140.171.0/24 -all"
Authority
paubox.com. 172800 NS ns-1114.awsdns-11.org.
paubox.com. 172800 NS ns-1972.awsdns-54.co.uk.
paubox.com. 172800 NS ns-222.awsdns-27.com.
paubox.com. 172800 NS ns-790.awsdns-34.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0